I just saw this, but God who knows everything He knows that I would have said a prayer for her before her surgery.

Never too late!

The Church never professed, or practiced, this idea of "never too late". That is not traditional. Saints have urgently prayed for people who were about to die, which shows they did not believe that prayers after death are applied to a person when they were living in the past. I have seen this pop up about two other times in the past 20 years, but it is an abuse of the idea that God knows the past and present.